Use the reaction to complete the activity.

Question

KOH + HBr -> KBr + H20
A student sets up a titration apparatus with 25 mL of potassium hydroxide in the flask.
In three to five sentences, explain how the student can use a 0.1 M solution of hydrobromic acid to determine the concentration of potassium hydroxide in the reaction.

Answer 1

To determine the concentration of potassium hydroxide (KOH) using a 0.1 M solution of hydrobromic acid (HBr), the student needs to perform a titration. The student should slowly add the hydrobromic acid solution from a burette into the flask containing the potassium hydroxide solution while constantly stirring. They should continue adding the hydrobromic acid until a color change is observed, such as a permanent pink hue indicating the end point of the reaction. The volume of hydrobromic acid required to reach the end point can be used to calculate the concentration of the potassium hydroxide using the balanced equation and stoichiometry.